Firstly I'd recommend splitting the first name and last name into seperate fields. That way in your templates it would look nicer:

{{ member.firstNameField }} {{ member.lastNameField }}

than having:

{{ member.firstNameField }} {{ member.title }}

when outputting their names.

Once you have done that, you can set the slugs to being the first and last name fields in your Channel settings:

{firstNameField}-{lastNameField}

Likewise, in your entry type settings you can set the entry title to run off these first name and last name fields:

{firstNameField} {lastNameField}

I may have mis-understood your question, but I hope that helps.

Firstly I'd recommend splitting the first name and last name into seperate fields. That way in your templates it would look nicer:

{{ member.firstNameField }} {{ member.lastNameField }}

than having:

{{ member.firstNameField }} {{ member.title }}

when outputting their names.

Once you have done that, in your entry type settings you can set the entry title to run off these first name and last name fields:

{firstNameField} {lastNameField}

The slug will be automatically generated from this as well. I may have mis-understood your question, but I hope that helps.