Challenging Question for WordPress

Hey folks,

this is maybe gonna be an easy one for the geeks here: (but it’s giving me headache the last days and weeks)

we (a new fitness company from germany) want to install a new wordpress template.

1. Question

Is it possible to modify different templates by adding plug ins (member login to a template that has NO login in their menu) – means, we need a membership management plug in to put on our wordpress site.

2. Question

We need a appointment schedule plug in – we can just find some regular ones for booking some public events. we want to have this in our membersection. means, that our members can choose their group classes every week.

3. Question

Do you know a usefull event booking appointment scheduling plug-in, that can modify the appointments per week, a registered member can do.

we have different plans for members: means, 1x / week + 2x / week + 3x / week.

and we don’t want to have different user accounts for our membership.

what could be the easiest way to solve all our problems with one template and maybe 1-2 plug-ins?

any recommendations?

thank you so far –

a frustrated noobie from germany.