Can I choose not to add shares to an existing section 104 holding?

I have previously vested RSU shares in a section 104 holding. I am still receiving new RSU shares of the same type, each come as a lot with their own recorded costs. Must I pool this newly vested shares of the same type to the existing section 104 or can I manage them separately as a discrete lot with their own cost / cap gains calculation?

Slight correction on language to make this clearer. Must I always pool these newly vested shares of the same type to the existing section 104 or can I choose to not add/pool them and instead manage them separately as a discrete lot with their own cost / cap gains calculation?

Hi,
If all of the shares in the S104 holding were vested, then a new S104 holding is required.
Thank you

Hi ,
 

It is up to you if you want to do this.  S104 pools are optional . Thank you .