I have no experiance with the 750, but it should be pretty simple.
You remove the R/H engine cover (clutch cover).
This may mean moving footpegs ect.
You remove the clutch springs (don't know if the 750 has coils or diaphram spring?)
Remove the clutch plates.
Install all new plates (soak fibre plates in oil first)
Install new spring.
Rebuild bike (with new clutch cover gasket)
Now, it may be only 1 of the many parts listed above that needs replacing (ie, just the spring(s), or just the friction (fibre) plates). But I am one of those guys that does everything so I don't have to go back...
Or pay a workshop about an hor to do it for you.
Unless you are spinnin the tire!!!