You have three options:
1- buy a new deck that can accommodate multiple arms. $$$
2- build or rebuild a deck that can accommodate multiple tonearms. Start with a Thorens TD-124 or Garrard 301 and... $$-$$$
3- buy a vintage deck that can accommodate multiple tonearms. I am particularly fond of the Luxman PD-444, but there are several others. $-$$
1- buy a new deck that can accommodate multiple arms. $$$
2- build or rebuild a deck that can accommodate multiple tonearms. Start with a Thorens TD-124 or Garrard 301 and... $$-$$$
3- buy a vintage deck that can accommodate multiple tonearms. I am particularly fond of the Luxman PD-444, but there are several others. $-$$