"Volo pacem, officio paro bellum." I want peace, out of duty I prepare for war.
The verbage here is taken from the saying "vis pacem, para bellum." If you want peace, prepare for war."
Your phrase literally means "I make towards peace, dutiful I prepare for war."
Officiosus feels clunky too me, and its a bit too ...
Cassell's Latin Dictionary has:
enable = dat. of person + gen. of thing + facultatem facere
facilitate = acc. of thing + faciliorem reddere
The Dictionary of Medieval Latin from British Sources (DMLBS) has "facilitare, to render easier, help." ( https://logeion.uchicago.edu/facilitare - attested AD 1412, plus a number of possibly earlier ...
It looks like the verb you are looking for is very close semantically to allow/permit. Interestingly, you use allow in your question: "What I am after is a verb like "enable" or "facilitate" that would allow me to convey the idea concisely and flexibly".
If indeed you can use "enable" instead "allow" in that ...