Yes, you can connect more than one LNBs/dishes with one STB/receiver using a special switch known as diseq switch.
Since Asiasat 7 (105.5° E) and Paksat 1R (38.0°) are way apart, using same dish for both satellites may not be possible.
2 feet dish is useable only for satellites having a strong foot print (with a larger EIRP value), like satellites utilized by Indian DTH services e.g., dish tv, tata sky etc.
For Asiasat you need at least a 4 feet dish, don't know about Paksat.
Since you need a temporary setup at you work location it is better to search on sites likes olx etc and buy a complete used and running setup with all accessories.