Several questions regarding functional in OTRS

[avoronchikhin]

Interested in some functionality in OTRS (version 3.3.5), the ability to configure or develop and as time-consuming.
I would be grateful if you answer at least some questions.

1) Is it possible to configure approval process and configure processing service requests (requests from the client)? By approval process is meant the chain of approval depending on the application, filed by the client. For example, for a single request, you must first agreement direct supervisor customer and then one of the security guards. And for other applications need only approve from security services.
By processing service requests meant automatic creation based on application specific criteria of an system object : request with type of incident or ITSM change object.
2)Is it possible to implement the service catalog for the client in system ? Not in terms of setting the structure of services, but in terms of self-service portal for the client to choose service available only for him from the web interface (eg password change, or installing software) and depending on the selected services would be created request with a specific type and approval scheme, or ITSM change object with a specific approval scheme, automatic routing to the correct queue, and automatic apply necessary time point on SLA.
3)Is it possible to split the application into smaller tasks and make templates for complex requests? For example, the request associated with the installation of a new workplace. Within the request, you must install the desktop, computer, give access to business systems and do this all different people from different queues within a single request. Is it possible to split the request into separate tasks with a certain sequence and status dependency? That is request becomes completed ​​only when all of the tasks within the request are completed.
4)Is it possible when creating an request to perform search for similar requests directly from the new request with automatic fill in a search criteria data from the attributes already filled in the new request? And if necessary also to link the new found request. If not, it's hard to do it? Development or simply setting?
5)Is it possible to add additional request form field similar to the field "customer account"? Need for requests in which the application is initiated by one person but by the customer on request is the other person (eg, his head), which also is necessary to fix in the request ticket? How difficult is it to make?
6) Do I understand correctly that in OTRS as integration tools are used only web-services and inbound mail handler?
7)Whether there is the mechanism of loading data from xml, csv-files or databases on a schedule?
8)Are there any development of bilateral integration OTRS with MS SharePoint in terms of creating requests in OTRS from MS SharePoint and update their status in both systems?
9)Do I understand correctly that for developing business logic of the system is necessary to use perl?
10)Can a customer buy only technical support, without buying services for the implementation in the first year implementation of the product?

Thank you!