Add "log" field or "description" to deployment plan

Can you ad a text field in which a user can, when creating a deployment plan, add descriptive text about that deployment plan? notes that correspond to the config work included, any potentially important testing, code release tag or project milestone?

Also can a deployment plan contain the following metadata:

• user who creates
• date created
• dates used (log of all dates on which the deployment plan has been used)