Srry about the pics:(

The plant in the picture is showing signs of insufficient light and excessive water. More light and less water should sort it out.

Does the pot have a drainage hole?

The pots do have drainage holes. I am probably watering too much. They get plenty of light. Should i trim the leaves that are affected? Will it pass onto other plants?

The etiolated appearance of the new growth in the top picture is a pretty clear indication that they do not have sufficient light.

I will move them to a different spot. Should i isolate them from my other plants?

There is no need. Water them properly and give them sun and they will bounce back. They are just a bit over watered right now.

Can the plants be moved to a sheltered location outside?

FataMorgana

Ok i will. Thank u for the posts. I have moved them outside. We will wait and see