How can I set up my somfy controlled blinds to go up and down at specific time periods?
You need a way to send Infrared signals to the Adapter. So you will also need to buy a remote for another 50USD.

So to use it from another computer somewhere else in the office you first need to get this

USB Wireless adapter for your PC

Then you need to get an access point to bridge the wireless to a electric 

This AP - i am not sure but you might need something more- read more here

But i think this temperature controller will be better- as you dont have to program any thing just set some temps and viola- but again- you might need to buy something extra to connect to your blinds.. read more