Can I execute two 'functions' when completing a mail merge from CRM?

Can I execute two 'functions' when completing a mail merge from CRM?

Hi,

I have set up a mail merge from CRM Deals to a template. I want a copy of this to be saved in Workdrive, and then a copy also saved back into the deal record from which the merge occurred. 
I can do both independent of each other, and managed to get the function set up, but am unable to figure out how to do both at the same time apart from completing the merge twice. Is there any way to set up a sequential merge storage to minimise clicks? i.e. invoke the custom function after saving to workdrive in order to save as an attachment to the deal