I customized a spreadsheet I want all users on my project to use.
Ironically, the vba code is there to secure the document, which has almost
30 worksheets, so everyone can view key portions of it safely, and then
unsecure it when its primary administrator needs to edit it.

I am new to VBA and not in the IT department. I used selfcert.exe to get
past my own machines security. I know this is not an industrial strength
signature.

To run the sheet on our exchange server:
1) must I find out if we have a certificate available, and get permission to
use it?
2) we are not a development shop, relying on third party solutions for the
most part - so we may not even have a signature for use. Must I ask every
user to lower their personal security just to use this? What other options
are available?

I did as much rsearch as time allowed, but this is the best I can do for
now.

TIA