STEP 1: Select a language which you know better.
STEP 2: Select the word
STEP 3: Select Parts of Speech and gloss for all possible meanings
STEP 4: After all senses are marked, start the assignment
STEP 5: In Assignment, mark the sense id for the word selected in STEP 2 in all the sentences and check each of the sentences by clicking on submit button

NOTE: You have to complete all the senses available in the drop down menu before starting the assignment.