Real Estate Purchases in 2 member LLC with a Solo 401k

[Debra K.]

My partner and I (we own an LLC) are looking to purchase investment property together. We will be transferring into a Solo 401k our separate 401K accounts that were established at prior jobs. Can someone explain if:

1)  We should/must establish separate accounts within the Solo 401K with each having its own checkbook to purchase our own investments?

2)  If we purchase an investment property through this Solo 401K and we want to own it jointly, do we fund it from each of the two checking accounts?

Thanks for any insight!

Debra