[WriteLog] Callsign change

[DanW]

This problem has surfaced its ugly head this past few days and need to find
out how others handle this issue.

How do I change my call sign within the software?  I'm guessing I can't?
It's branded into the software when you purchase the registration?  Correct?

So what do others do when they have guest operators show up and want to
operate using writelog and their call sign; special events or having four
guest operators stop by in 3 days. The variable "mycall" is now set to my
KL1JP. What if I want to operate as W1AW/KL7 and use my writelog software
which is registered to KL1JP.  Do I need to buy writelog in bulk?

Thanks
Dan KL1JP