For Skype for Business Online organizations, you can use the Remote PowerShell in Office 365 to enable your Skype for Business users to use the Skype for Business client or the Skype for Business (Lync) client user interface. The default setting is for users to use the Skype for Business client user interface.
Yes you do - all of it, but under most circumstances, not until after you graduate college (or leave school for other reasons). Under normal circumstances when you graduate or drop below a certain # of units of attendance, you will be expected to begin paying back your student loan 6 months later. For subsidized student loans, this is when the interest will start accruing as well.
TSP Loans Repaid Through Payroll. Loans are repaid through payroll allotments over the payment period specified in the loan agreement. You may not take out a new loan for 60 days after paying off a loan. If you leave federal service you must repay the loan in full, including interest on the outstanding balance to the date of repayment.