To accurately conclude if a pin requires a pull-up or pull-down resistor, it's important to know the specific component associated with the said pin. Unfortunately, your project description does not provide this information for unconnected pins.

Generally, pull-up or pull-down resistors are needed for inputs to digital logic circuits. For components such as microcontrollers, GPIO pins can often be configured with internal pull-ups or pull-downs.

In your case, the following unconnected pins are found in your project:

V1 is a power supply (based on its voltage property) and whether it needs to get connected to something depends on the overall circuit design and application. T1 seems to be a transformer (based on its properties like primary inductance and coupling coefficient). It would be unusual to need pull-up or pull-down resistors on a transformer windings (S1 and S2).

Finally, P1 has no pin name, and no sufficient properties specified that can provide insights on whether it needs to be pulled up or down.

You should consult the datasheet or additional resources related to each component present in your circuit design for definitive information on specific pin connections.

concetadlo a p1 y gnd

If I understand correctly, you want to connect GND to P1. For this, you can use the Portal part type (or explicitly wires) to connect these components. Every Portal with the same designator gets connected to each other in the PCB and simulation. Thus, you could create a "GND" Portal directly at the GND pin and another one at the P1 pin to connect them together[1].

Here are the steps:

Remember to re-run any previous simulations to verify the new connectivity in your updated schematic design.

[1] https://docs.flux.ai/reference/how-to-use-part-types