Hi Kayleigh,
Are you referring to getting the purchased plan to members, or the nutritional guide after they’ve purchased a plan?
If it’s the nutritional guide, your client can go to the member profile and send them a direct message with the file url or an uploaded PDF file.
If you’re referring to a paid plan, your client can create a pricing plan that includes a nutritional guide as an added service, and then manually add her clients.
Refer to the article below for additional information on manually doing this.
https://support.wix.com/en/article/pricing-plans-manually-adding-clients-to-a-plan
I hope I was able to help! 