Sure, the capacitors in your project have the following values:

I assume you would like to replace the 0.1uF capacitors with 1000pF since C6 already has the desired value of 1000pF. Keep in mind, though, that 0.1uF is the same as 100000pF, so replacing 0.1uF with 1000pF will greatly decrease the capacitance.

Here are the capacitors you should change to get a 1000pF value:

Make sure to verify that this change is appropriate for your circuit's operation as it will greatly affect the component's ability to store charge. Please let me know if you need assistance with anything else.

The connection between C1 and C2 depends on what you are trying to achieve in your circuit.

Note that C1 and C2 are capacitors. The primary reason to connect capacitors is for either:

In series connection you should:

In parallel connection you should:

These are basic suggestions, circuit behavior could change based on the rest of your components and connections.

connect them

Sure, let's go ahead and make the connections for you.

As I mentioned before, it depends on how you would like them connected. Since you have not specified, I'll assume you might be using the capacitors for a power supply filtering application, in which capacitance adds up.

For parallel connection:

For series connection:

Please let me know if this helps or you need them connected in a different way.