# Add or Delete Feature Bits for an Existing FCOS

It is possible to add or delete feature bits from an existing FCOS, however, we recommend that you do NOT use this as a method of customizing an FCOS. This procedure should only be used to make global changes to an existing customized FCOS. Do not add or delete feature bits to a default FCOS - customize an FCOS instead.

Example 1:

All Sales users have custom FCOS 97. You are asked to add feature bit 200 Personal Fax Cover Page to ALL users who have FCOS 97. In this case, you can add the feature bit to the existing FCOS because ALL users will be affected.

Example 2:

All Sales and Security mailboxes have custom FCOS 92. You are asked to update only the Sales mailboxes so that user passcodes are optional, so you'll need to add feature bits 70, 73, and 125. If you add these bits to the FCOS, then ALL mailboxes, (including Security mailboxes), are given the optional passcode feature. In this case, you would copy FCOS 92, re-number it, add the new bits to it, and then apply it to the Sales mailboxes.

To add/delete feature bits to an existing customized FCOS:

1. From the Main Menu, select (S) System Maintenance, (R) Reconfiguration, (F) Feature COS.

2. Select (C) Current FCOS and enter the number of the customized FCOS you want to modify.

3. Select (A) Add Features OR to delete feature bits, select (D) Delete Features and enter feature bits in the following format:

1. - a single bit, for example: 208

   - a range of bits, for example: 202-208

   - a series of bits, for example: 39,40,207,208

   - a mixed entry, for example: 37, 49, 52-72, 201,202 (do not enter spaces after commas and do not end the entry with a comma)

4. After confirming that additions and/or deletions are correct, exit from the Feature Class of Service Menu to save changes.

- Customizing Your FCOS