At the moment, the process for approvals is:
Check with the appropriate addenda as to the Approval Level. If it is LST Approval, a quick conversation with your LST will suffice.
If the item requires further approval, you will need to write an email containing:
What the approval is for
Why you want the item/power
How your character is obtaining the item/power
And anything else you feel appropriate to support your request
The email recipients are determined as follows:
DST Approval: Send to your LST and your DST. If the approval requires communication with other LSTs, the DST will do that.
GST Approval: Send to your LST and the appropriate GST.
UST Approval: Send to your LST, the appropriate GST, and the UST.
It is likely that the higher level people in the chain will not respond until the lower levels have had a chance to have input, although that isn't a hard and fast rule.