Hi
Check the below options
1. if 100 Materials are constant all the time to filter Q...then you can specify in the default filter values. So all the time it will filter 100 material and run the report
2. in the Prompt definition you can specify multiple values selection....so user can select at Q run time by using shift key, can select more than one filter values
3. if 100 material are dynamic..based on some condition it will change every time...then you need to create sub query with that conditions....then sub Q will output gives the list of materials at run time to main Q as prompt input values.