By admin do you mean the person who created the segment? In most cases you don't have to be an admin to create a segment (permissions vary per account). Now if you want to modify a segment that was shared with you, you can't do that. You either 'Save As' the segment and modify it, which will create a new segment or ask the original owner to modify it. If the original owner is no longer an active account you can transfer the segment to your account, but an Admin will have to do that.

There are two ways you accomplish this when the tag is fired and send the data to two places with only one server call.If you have RSID in your AppMeasurement or sCode file you can simply add extra RSIDs separated by commas, such as:s.account="RSID1,RSID2";If you are setting your RSID in DTM then under the Adobe Analytics tool under 'Report Suites' you can add another report suite for Production or Dev/Staging