"V_ARC_OBJ-USE_INDEX" was not set

I am looking to st this index and when i go by this thread. I donot see option like what is mention byALEX

I do see the field

Object Name

Text

Application Area

Application Component

Write Program

Delete Program

Reload Program

Preprocessing Program

Postprocessing Program

Index Build Program

Index Delete Program

and check BOX

Archive Select Active

Index Build Allowed

"Invalid" inidcator .

Please if some one know exact steps how to set this index then let me know

thanks