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Problems in developing recruiting app
The number of user that can be created using force.com licenses are less and the users created with work.com and others cannot be assigned permission sets. This is too bad. Can anyone please suggest how you created users (including the license type used while creating each user)?
looks like you have not added your button to page layout, Click on Setup -->go to your object --> click edit on page layout --> Search for your button name in the Quick find section --> drag and drop your button onto you custom button section. save the page. !!!