Following are the steps to increase the limit:

1. Unprotect the INPUT sheet using the password indzara to enable to input beyond 50.

How to unprotect sheets?

2. Unhide the HELP sheet:

3. Select the last row along with additional rows as shown below and press CTRL+D to expand the calculation table:

4. Unprotect the salary structure sheet and expand the table the same as in Step 3.

Thank you.