We already have Vtiger installed and configured!
1. We just need to add (35) fields (provided in russian)
2. Modify user access to these fields (three types of users) like in the document attached.
3. Remove extra tabs (sales, marketing ... etc .. we only need support and accounts)
4. Make first page users sees when they login different depending on the type of user just like in #2 ( either goes right away to add account, or manage accounts)
In a separate project we might need more customization. More advanced logging. etc.