This are the files needed to create and interact with a multisigFactory contract

IMultisig.sol

// SPDX-License-Identifier: SEE LICENSE IN LICENSE
pragma solidity 0.8.19;

import {Transaction} from "../multisig.sol";

interface IMultisig {
    function createTransaction(uint _amount, address _spender) external;

    function getTransaction(uint id) external view returns (Transaction memory);
}

multisigFactory.sol

// SPDX-License-Identifier: SEE LICENSE IN LICENSE
pragma solidity 0.8.19;
import {MultiSig} from "./multisig.sol";

contract MultisigFactory {
    MultiSig[] _multisig;
    event Create(address _addr);

    function getAllMultisig() external view returns (MultiSig[] memory) {
        return _multisig;
    }

    function createMultisig(
        address[] memory _admins
    ) external payable returns (MultiSig newMultisig) {
        newMultisig = new MultiSig(_admins);
        _multisig.push(newMultisig);

        emit Create(address(newMultisig));
    }
}

multisigFactory.ts

import { ethers } from "hardhat";


async function main() {
    /**
     * 1. ethers.deployContract()
     *      a. Helps you deploy your Contract.
     *      b. Takes in three arguments
     *          - The contract name (required)
     *          - The constructor arguments (optional)
     *          - The ether value (optional)
     *      c. The response from .deployContract() is passed to the `.waitForDeployment()` function
     * 2. `.waitForDeployment()`
     *      a. A method called on the return value of the `.deployContract()`
     *      b. e.g.,
     *              const one = await ethers.deployContract("MyFirstContract", [1], {value: '10'})
     *              await one.waitForDeployment();
     */

    const factory = await ethers.deployContract("MultisigFactory", []);
    factory.waitForDeployment();

    // console.log(factory);
    // 0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266   // EOA
    // 0x5FbDB2315678afecb367f032d93F642f64180aa3   // Deployed Contract Address

    // 0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266   // EOA
    // 0x5FbDB2315678afecb367f032d93F642f64180aa3   // 

    const [addr1, addr2, addr3] = await ethers.getSigners();
    const admin = [addr1.address, addr2.address, addr3.address];

    const childMultisig = await factory.createMultisig(admin);
    // console.log(childMultisig);

    // The event from the factory contract, used to get the address of the newly deployed contract (args)
    // @ts-ignore
    const childMultisigLogs = (await childMultisig.wait())?.logs[0]?.args[0];
    console.log(childMultisigLogs);
    // 0xa16E02E87b7454126E5E10d957A927A7F5B5d2be   // Contract Instance address

    const interactOnline = await ethers.getContractAt("IMultisig", childMultisigLogs);
    // const onlineMoney = await interactOnline.createTransaction(ethers.parseEther("1000"), addr3.address);
    // console.log(onlineMoney);

    const ay = await interactOnline.getTransaction(1);
    console.log(ay);
}

main().catch((error) => {
    console.error(error);
    process.exitCode = 1;
});